<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
       ul,li, ol{
            list-style: none;
        }
        .banner{
            width: 790px;
            height: 340px;
            margin: 100px auto;
            position: relative;
            font-size: 12px;
        }
    .arr_l,.arr_r{
        height: 60px;
        width: 30px;
        background: rgba(0, 0, 0, 0.2);
        font-family: "icomoon";
        font-size: 20px;
        color:#fff;
        position: absolute;
        top: 50%;
        margin-top: -30px;
    }
    .arr_r{
        right: 0;
    }
    .arr_l{
        left: 0;
    }
    .banner ol{
        width: 180px;
        height: 20px;
        position: absolute;
        left: 50%;
        margin-left: -90px;
        bottom: 20px;
        background: rgba(225, 225, 225, 0.2);
        border-radius: 10px;
    }
    .banner ol li{
        width: 16px;
        height: 16px;
        background: #fff;
        border-radius: 50%;
        float: left;
       margin: 4px 5px;
       font-size: 12px;

    }
    </style>
</head>
<body>
    <div class="banner">
        <a href="#" class="arr_l"></a>
        <a href="#"class=arr_r></a>
        <ol>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
        </ol>
        <ul>
            <li><a href="#"><img src="images/banner.jpg" alt=""></a></li>
        </ul>
    </div>
</body>
</html>